Advanced Point Sensor

The enhanced capability point bio and chem sensor is based respectively on the recently discovered phenomenology of biological aerosol differential backscatter in the long wave infrared proven in field trials with a standoff sensor and on differential absorption. The novel point sensor will use compact, wavelength agile transmitters, including quantum cascade lasers and/or miniature CO2 lasers operating in the 8-12 ƒÝm band that will be integrated into a combined differential absorption and backscatter cell with diagnostics typical of ringdown spectroscopy. The new point sensor will improve on present technology with the ability to detect and identify biological agent classes with good specificity and distinguish them from naturally occurring aerosols and interferants such as diesel exhaust, and it will be able to identify chemical agents using the same components and in the same package.